Calculating machine



Dec. 21, 1943. A. J. FETTIG CALCULATING MACHINE Filed Dec. 28, 1937 10Sheets-Sheet 1 M50 z f M I w 0 W m r O E U. W V1 A N41. 4 .l T

Dec. 21, 1943. J E 'nG 2,337,091

CALCULATING MACHINE Filed Dec. 28, 1937 10 Sheets-Sheet 2 A. J FETTEL'ECALCULATING MACHINE Filed Dec. 28, 1937 10 Sheets-511895;.

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Dec. 21, 1943. A. J. FETTIG CALCULATING MACHINE Filed Dec. 28, 1937 mum.Dec. 21, 1943. A J FETTIG CALCULATING MACHINE Filed Dec. 28, 1937 10Sheets-Sheet 5 BMIZ, I

ATTORNEYS 21, 1943; A J FETTl I 2,337,091

CALCULATING MACHINE Filed Dec 28, 1937 10 Sheets-Sheet 6 llullllllATTORNEYS Dec. 21, 1943.

A. J. FETTIG 2,337,091

CALCULATING MACHINE Filed Dec. 28, 1937 l0 Sheets-Sheet '7' Fig.1]

INVENTOR Dec. 21, 1943. A. J. FETTIG 2,337,091

CALCULATING MACHINE Filed Dec. 28, 1937 10 Sheets-$heet 8 207 Susr. 9"

2% ADD "0" ATTORNEYS Dec. 21, 1943 ('UELOULAT I HG MACH INE Filed Dec.28, 1937 10 Sheets-Sheet Dec. 21, 1943, A. J: FETTEG 2,337,091

CALCULATING MACHINE Filed Dec. 28, 1937 10 sheets-sheet 10 Set Pre-SetCounter Here and. Depress Motor Bar to Start I i v Automatic Cycle.

Rayment Amount En- 1 I 2 3 Contract amount tered, Motor Bar 53 523 12223 Depressed, Carriage g 0 R A C T 14) ldded in CNN! Tabulates,Carriage y footer 150 95"? 5 g?" DEC 12-00 128-00 Platen Lin; Spaced,

n ross oo er Carriage Tabulate Add 1 Re 1st 151.

n a e (JAN 1200 1160O FEB 12.00 I 1 04.00

MAR 12.00 92.00

' A t t" c Automatic y APR 12.00 Automatic 80.00 QLZTZ 3 K3 CarriageControlled v()ycle s f subxrotal Register J KAY 12.00 ing Stroke? 68.00crossfooter subract Croesfooter JUN 4 12.00 56 QQ Non neflistel" JUL12.00 44.00 I

, 'AUG 12.00 252.00 Add Register Total k SE? 00 L 20 00 J Xe De ressedcairiage corm ol of OCT 12 00 gr f qr Su Subtract in Cross- 3 g p e "u--?"I- 1 meter. Croszfootgrf Crogssfootar Total/ Key Disables Subtract,Motcr Bar Depressed W Crossfooter Total for Spacing Stroke CarriageArrives Here Key Depressed. to Tabulate Carriage for Next Contract.

into Column No. 3,

Add. Register Non Add, Crossfocter Crossfooter Total Restored to Add.Key Depressed,

' 1 (Closed Account).

A TTORNE y;

Patented Dec. 21, 1943 CALCULATING MACHINE Arthur Fettig, Detroit, Mich,assignor to Burroughs Adding Machine Company, Detroit, Mich, acorporation of Michigan Application December 28, 1937, Serial No.182,056

6 Claims.

This invention relates to a calculating machine. It is concernedprincipally with certain improvements for enabling such a machine to beemployed to automatically set up the payments on a deferred payment planor contract.

When an article is purchased on the deferred payment plan it isdesirable to prepare a statement showing'in advance the date and amountof each payment, together with the amount of the unpaid balance oppositeeach payment. This advance statement serves as a record both for theseller and purchaser during the life of the contract so that eitherparty may know at all times when the next payment is due and what thebalance will be after the payment is made. Provision is sometimes madeon this statement for receipting or indicating each individual payment.

The general object of the invention is to provide an improvedcalculatingmachine.

A more particular object is to provide a ma- .chine in which, after theamount of the contract and the amount of the payment is entered, and themachine set in operation it will automatically cycle so as to print andtabulate the amount of'each payment and the unpaid balances opposite theamount of each payment, all of which is entirely automatic until thebalance is reduced to the last payment, at which time the machinecycling is automatically stopped and the operator then completes thelast item by manual operation of the machine. The automatic cycling ofthe machine in this manner permits'a much faster operation than the handoperated method and it also relieves the operator for other duties inconnection with preparing the contract.

Other objects and advantages oi theinvention will appear from thefollowing specification and drawings.

An embodiment of the invention is illustrated in which,

Figure 1 is a perspective view of a machine embodying the principles ofthis invention;

Fig. 2 is a left side elevation of a machine with the invention appliedthereto;

Fig. 3 is a detail side elevation of a portion of the mechanism which ispre-set to obtain predetermined operations;

Fig. 4 is a partial right side elevation showing the motor control barsand the automatic cycling mechanism the parts being shown in normalposition;

Fig. 4 is a fragmentary detail of the motor clutch and connections;

Fig. 5 is a detail side elevation showing the motor bar and certainconnectlonsthereto;

Fig. 8 is a rear view showing some of the parts of the machine that aremore especially connected with the invention and illustrating thoseparts in position Just after the carriage has been returned from column3 to column I and before the machine has been operated in column 1;

Fig. 7 is a perspective detail taken from the left rear corner showingthe automatic means for sub-totaling certain of the registers;

Fig. 8 is a spread perspective of. the indicating means which is set bythe operator to determine the number of automatic cycles of the machine;

Fig. 9 is a perspective view of one of the index bars of the machineshowing the zero stops and the releasing means therefor;

Fig. 10 is a detailed view of the indicator and associated mechanism innormal position;

Fig. 11 is a left side elevation of the add and subtract mechanism ascontrolled by the carriage;

Fig. 12 is a partial front perspective from the left corner illustratingthe crossfooter shifting mechanism for add and subtract, the transfermechanism for both the crossfooter and lower register and carriagenormal key and connec-' tions;

Fi 12' is a diagrammatic detail of the transfer cams;

Fig. 13 is a fragmentary detail illustrating the parts with the totalkey depressed and the machine at the end of the forward stroke; and

Fig. 14 illustrates a sample of work that may be performed.

The invention is shown applied to a Burroughs machine of the so-calledlow or flat-keyboard type of machine illustrated in many patents such asGooch No. 1,395,044 and No. 1,327,318, and by Peters No. 1,255,821. I

General construction .is one for each order or bank of the machine.

These index bars are retained in zero position by zero or cipher stopsl5 formed integrally with from the front of the machine, in tabulatinglatches ll (Figs. 2 and 9) which engage lugs 16 on the bars as shown inFig.9. When an amount key is depressed a cam lug II on its stem (Fig. 9)rocks latch ii and the zero stop i for said bank out of position to freethe index bar for move ment,

The rear ends of the index bars i4 (Fig. 2) are connected to respectivebell crank levers 20 pivoted at 2|. These bell cranks have upwardlyextending curved arms carrying type 22. the arrangement being such thatthe type are differentially positioned in front of a platen 23 at thetime the index bars are positioned. After the type are differentiallypositioned and near the end of the first half of the machine. cycle, aprinting mechanism which may be like that shown in the Gooch Patent No.1,395,0l4 operates to drive hammers 24 against the type bars to printthe item on paper held about the platen 23.

The bars l4 are urged forwardly by the springs is (Fig. 2), whichthereby also urge the arms carrying the type 22 upwardly, but the bars14 are normally held one step of movement to the left beyond their "0positions and the arms carrying the type 22 are likewise held one stepbelow their 0 positions as shown in Fig. 2 by the bail l9 engaging theforward edge of the downwardly extending arms of the bell crank levers20. When the machine is given a cycle of operation, the bail I9 is movedaway from the downwardly extending arms of the bell cranks 20 to permitthe bars I4 to move forwardly and the arms carrying the type 22 to moveupwardly under the urge of their springs to their 0 positions, wherethey are limited by the 0 stops for printing ciphers in orders where noamount keys have been depressed and permit the bars 14 and arms carryingthe type 22 to move to differential positions in orders where amountkeys are depressed. During the latter part of the cycle, the bail i9 isreturned to normal position to return the bars I4 and type 22 to theirnormal positions, also as disclosed in Peters Patent 1,255,821.

Carriage tabulation Provision is made for having printing occur indifferent columns on the paper by mounting the platen on a travelingcarriage and by moving the carriage from column to column across themachine. Referring to Fig. 6 the carriage is returned, i. e., urged tothe left in said figure, or to the right as viewed from the front of themachine, by a spring drum 3! connected by a tape 32 to the carriage. Thecar" age is moved to the right in Fig. 6 or to the t when vieweddirection by power derived from the drive shaft 33 (Fig. 6). This shaftis rocked during each machine cycle and carries a block 34 having a camslot 35 in it. Positioned in this slot is a stud 36 on the lower end ofa lever 31 pivoted at 38. Pivotally mounted on the upper end of thelever 31 is a pawl 39 having a shoulder 40 upon its right end and urgedcounterclockwise by a spring 4|. As the machine is cycled and shaft 33is rocked, the lever 31 is first rocked counterclockwise (Fig. 6) movingthe pawl 39 with it. Near the end of the movement of said lever,shoulder 40 snaps behind one of the adjustable tab stops 42 on thecolumn stop bar 43 of the paper carriage. Then, as the lever 31 movesclockwise. the carriage is tabulated or moved to the right against thetension of its spring 3| until the tab stop 42 passes slightly beyondthe abutment arm 44, in which position the carriage is held by pawl 39until return movement thereof. When pawl 39 returns, upon the nextcycle, the carriage drops back slightly until the stop 42 engages theabutment 44 which holds the carriage while pawl 39 moves to the left toengage the next stop 42. Abutment 44 is pivoted at 45 to the machineframe, is urged counterclockwise by spring 46, and extends to the leftwhere it is attached to a vertical slide 41, the purpose of which willappear later.

Carriage return As the carriage is moved to the right (Fig, 6) into itslast position which is in number 3 column in the present case, acarriage roll 48 engages and depresses the upper arm of a lever 128,which is pivoted at 129 and the lower arm 139 of which engages and movesa yoke 49 to the right in order to condition the line spacing mechanismto space the platen after printing the third column, as will bedescribed hereinafter. Yoke 49 is supported by a shaft 50 and isutilized to control the carriage return movement as follows:

For this purpose one end of a link 5! supported by lever 52 pivoted at38 is connected to the ball 49 and extends to the left where it isprovided with an extension 53 which under certain conditions is adaptedto underlie a rearwardly projecting lug 54 formed on a vertical slide 55slidingly supported by shaft 50 and a parallel shaft 55. Slide 55 isurged upwardly by a spring 51 and is also provided with a laterallyprojecting lug 58. The extreme left end of pawl 39 carries a stud 59which when the pawl is moved to its extreme left position engages thelug 58 and tends to move slide 55 downwardly against the action of itsspring 51 if the slide is free to move. With the carriage in column 3,yoke 49 is moved to the right by the roll 48 and places the extension 53under lug 54 thereby preventing downward movement of slide 55. Underthis condition as the pawl 39 moves to the left, its,left end is cammedupwardly by stud 59 on its left end, engaging the cam-shaped lug 58until a hooked finger 60 formed integrally with the pawl is loweredsufliciently to engage a latch Bl to retain pawl 39 in lowered positionto prevent it from engaging a stop 42 thereby disabling the tabulatingmechanism. The latch (ii is pivoted on the lever 81 and urged clockwisein Fig. 6 by the spring 4 I.

After an amount has been printed in column 3 and the machine starts onthe return stroke, pawl 39 being held in lowered or clockwise positionby latch 61, the stud 59 will engage the underside of the abutment 44and rock the latter clockwise causing its right end to release the stop42 by which it holds the carriage in the third columnar position thusfreeing the carriage and .permitting it to be moved to the left (Fig.6),

that is, returned by its drum spring 3 I The carriage moves to the leftuntil the first column stop 42 engages the margin stop 62 slidinglyconnected to the stationary frame and spring urged to the right (Fig. 6)by spring 63. This stop is asaaoer 8| and rocks the lattercounterclockwise to release the pawl 38 which then rockscounterclockwise'untii stopped by a stud 84 carried by the slidingmargin stop 82. This temporarily prevents pawl 38 from moving upward andengaging the stops 42. During the forward stroke of the next machineoperation pawl 38 moves to the left and clears stud 84 and is thenpermitted to engage the stop 42 for column 2.

release the carriage for return movement to the left. The left end ofabutment lever 44 is connected to a vertical link 41 (Figs; 4 and 6)which, link is connectedto a lever 88 pivoted at 61 and which is movedclockwise upon lowering of link 41. The forward end of lever 88 is inposition to engage another lever 88 pivoted at 68 connected to a lever18 pivoted at H and having a forward extension adapted to engage a slide12 supported on a stationary bracket 13. The lower end of slide 12 isprovided with a laterally projecting lug 14 adapted to engage a clutchcontrol lever 16. The clutch control lever 16 is one arm of a to arm 81.During the forward machine stroke arm 81 is moved counterclockwise bythe full stroke sector 88 through the connecting link 83 during whichmovement the cam 88 engages lever 18 and rocks the latter and yoke 11clockwise to permit the arm 82 and shaft 18 to be restored to normalposition by the usual spring (not shown). This prevents a second releaseof the clutch memher until the previous machine operation has been fullycompleted, at which time the arm 81 will restore to normal position andrelease the yoke 11.

As the machine is operated in column 3 from where the carriage is to bereturned to column 1. stud 58 on pawl 38 causes abutment 44 to be movedto release the carriage for its return movement to column 1. Theabutment is held in its disabled position by the stud 58 on pawl 38which is latched down by latch 6|. This causes the link 41 to be held inits raised position during the entire return of the carriage until thelatter arrives in column 1. Accordingly, slide 12 will be moved downwardand held in this position after the yoke 11 is moved clockwise by thecam 83 during the machine operation in column 3. At the end of themachine operation, yoke 11 is prevented from restoring counterclockwiseby the lug 14 which is in the path of the arm 13 thereby three-arm yoke11 (Fig. 4a) pivoted on shaft 18 and having two other arms 19 and 88.Shaft 18 is provided with a half round portion against which the clutchmember 8| limits as disclosed in 9. Vincent Patent 866,750 of September24, 1907. As disclosed and described in this patent when the half roundshaft 18 is rocked counterclockwise the clutch member is released tomove counterclockwise to cause a machine operation by a singlecounterclockwise revolution of shaft 18:: (Fig. 4a). Motor bar controlis through a lever 82 fixed on shaft 18 and another lever 84 pivoted onshaft 18. Lever 82 fixed to shaft 18 supports an adjusting screw adaptedto engage the lower arm 80 of yoke 11 and lever 84 pivoted on shaft 18is connected to the upper arm 18 of yoke 11 by a spring 85. Lever 84 isalso connected to an arm I48 which is the means for tripping the clutchthrough depression of the motor bar, as will be explained later. Thearrangement is such that when the motor bar is depressed lever 84 isrocked counterclockwise causing the spring 85 to rock the three-arm yoke11 counterclockwise, the latter releasing the clutch member 8| througharm 82 resulting in a single revolution of shaft 180.

The upper arm 18 is in position to be engaged by a cam edge 88 (Fig. 4a)formed on an arm 81 (Fig. 4) which is connected by a link 88 to the fullstroke sector 88. Arm 81, link 88 and full stroke sector 88 correspondsto the parts 32, 33 and 34, respectively, illustrated in Fig. l of theMuller Patent -2,001,367. In that machine the sector 34 is oscillatedfrom the usual hand crank. The present machine is a power driven ratherthan a hand operated machine and the sector is driven from a motor Mthrough shaft 18a as follows. This latter shaft has an arm 82a fixedthereto and connected to a link 83 which link is also connected to anarm 83a fixed to a main drive shaft 33 which carries sector 88. Aspreviously described sector 88 is connected by link 88 preventing yoke11 from restoring and preventing the clutch from being tripped againduring the return of the carriage.

In the present machine which embodies a repeat print mechanism by whichthe motor bar may be locked in depressed condition as hereinafterdescribed, the machine is prevented from operating during the time thecarriage is returning from column 3 to column 1, but when the carriagearrives in column 1 the latch 61 is released and the slide 12 is allowedto rise out of contact with arm 18, so that, if the motor bar is latcheddown, the spring remains tensioned and can again rock the yoke 11 tocause a further cycle of operation automatically.

Carriage normal key The machine is also provided with a carriage normalkey which is shown more clearly in Figs. 1 and 12 where the key isindicated as TAB. When this key is in its upper or normal position, itdisables the carriage tabulating and return mechanism and when depressedand latched by a notch in the stem engaging the casing, it enables thecarriage tabulating mechanism so that the carriage tabulates into eachcolumn and returns automatically as previously described.

This carriage normal key is connected by a crank 38 (Fig. 12) to a link31 which, when the key is depressed, moves forward to rock a lever 82clockwise, the latter moving the rod .88 rearward. Rod 33'is atttachedto a crank 84 (Fig. 6), the latter having a stud 85 positioned in agroove of a bushing or collar 88 freely supported on shaft 33, buthaving a key 91 attached to it which slides in a notch of a hub 88 fixedto shaft 33. The outer end of key 91 projects sufficiently to engage ina notch in the cam plate 34 when the carriage normal key is depressed.That is, when the TAB key is depressed, the key 81 is moved sidewise toengage the notch in cam 34, thereby connecting the cam 34 to the fixedhub 88 and thereby to the shaft so that it rotates therewith. When theTAB key is released to its raised position, the key 81 is movedlaterally out of engagement with cam 34. thereby disconnecting themachine. shaped lug 9Ia extending from the upper edge of the link SI anda stud 9H7 on the lower end of the stem of the TAB" key. If, afterdepressing the TAB" key, it is rocked forwardly farther than would bepermitted by its slot in the machine case, the stud 9Ib engages underthe hooked lug 9! a and thus latches the TAB key down as shown in Fig.12.

Line spacing The paper may be line spaced by a line space mechanism thatautomatically line spaces the platen as follows:

As previously stated, the drive shaft 33 (Fig. '4) is rocked firstcounterclockwise and then returned clockwise during each machine cycle.Fixed to shaft 33 is a bell crank IUD-connected by a link liil to an arm1802 fixed to shaft 56 iournaled in the frame of the machine. This shafthas another arm I04 fixed to it, the upper end of which is adapted toengage a stud 105 on an arm I05. The latterarm is slidable on a squareshaft I01 on the paper carriage but is restrained by a stationary guide(not shown) against moving laterally with the paper carriage and isurged clockwise with the shaft by a spring I08.

During the forward stroke of a cycle of operation, the shaft 33, bellcrank I00, arm I02, shaft 55 and arm Hill are rocked counterclockwiseand the spring E08 causes the arm WE and shaft It? to rock clockwise andthe stud 505 to follow the arm IM. During the latter half of the cyclethe arm I06 returns to its Fig. 4 position and rocks arm I06counterclockwise. In other words, during each machine cycle, the squareshaft I? is oscillated.

As shown in Fig. 10, the shaft I01 has an arm H0 fixed to it. Pivoted atill on this arm H0 is a line space pawl H2 which is urgedcounterclockwise (Fig. against a limit stud H t by a spring H3. The endof the line space pawl is adapted to engage teeth H5 of the ratchetwheel H6 fixed to the platen shaft. As viewed in Fig. 10, the shaft IE3?is first rocked counterclockwise and then returned clockwise. During thecounterclockwise movement, the line space pawl H2 is drawn back and then[during the clockwise movement said pawl engages the teeth M5 to linespace the platen. A detent II? is employed to hold the platen in theline space position to which it is moved. The number of lines that theplaten is spaced may be varied by a hand lever H8 pivoted at H9 andprovided with a lug I20 which may be positioned to engage the end oflever I If] or not as the latter is rocked counterclockwise by theaction of spring I08 (Fig. 4) on arm I01.

In connection with the prepayment plan disclosed herein, the linespacing mechanism is preferably adjusted to line space the platen twoline spaces when spaced. Also, it is not desired that the platen be linespaced for each machine cycle but, instead, the machine is to be giventhree cycles before the platen is line spaced-the operation desiredbeing that the machine operates in a No. 1 column, and in a No. 2 columnwithout line-spacing, and then in a No. 3 column, after which the platenis line spaced and egasaoei the carriage returned to No. 1 column. Thecontrol for this action of the line spacing mechanism to line spaceafter each line of entries is by the carriage.

Referring to Fig. 6, the arm I06 carrying stud i 05 has a relativelylong stud H25 projecting from it. Positioned beneath this stud is a lugH28 on the yoke d9 slidably mounted on shaft 50. As long as the lug I26is under stud I25, the arm I06 can not be moved by its spring I08 andthe line space mechanism will not be operated. The lug I26 remains inthe position of Fig. 6 until the paper carriage moves into its No. 3column when the roll 68 on the carriage engages the cam end of lever 128pivoted at I29, the lower end I30 of said lever being adapted to engagethe yoke 49 ,which is urged to the left (Fig. 6) by a spring I3 I. Whenthis occurs the lever I28 is rocked counterclockwise, the yoke 49 isslid to the right in Fig. 6, and the arm I06 is freed so that linespacing will occur during the latter part of the machine cycle with thepaper carriage in its No. 3 position.

Operating means which causes a stud M l on a depending finger of the barI43 to engage and rock a lever. I45 clockwise, said lever being pivotedat is and urged counterclockwise by spring IBF which tends to urge themotor bar upwardly to undepressed position. The rear end of lever I55has a downwardly extending portion M8 which is connected to lever 84aspreviously mentioned to control the clutch member 8|; thus, when themotor bar is depressed, the motor will give the machine a single cycleof operation. During this cycle the drive shaft 33 (Fig. 4) is firstrocked counterclockwise and then returned clockwise to normal.

Registering mechanism The machine has a registering mechanism or'totalizer I50 (Fig. 2) which is capable of both additionand subtractionand which will be called the add-subtract register or balance totalizeralso known as the crossfooter, and also another registering mechanism ortotalizer I5I capable of addition only. This will imply be called theadd register or totalizer.

The registers or totalizers are driven by racks on the forward ends ofthe index bars it, there being a set of upper racks I52 for theadd-subtract register and a set of lower racks M3 for the add register.Each set of racks is movably supported on the index bars so that saidracks may move an extra step relatively to the index bars to effecttens-transfers, as. will be described later.

' The registers are connected to and disconnected from the actuators, orracks, by mechanism which is substantially the same for both registers,and the description will be confined mainly to the mechanism forregister I5i.

The add register I5I which contains onlya single set of pinions iscarried by a frame I55 pivoted at I56, said frame being urgedcounterclockwise in Fig. 2 by a spring I5! so that the register isconstantly urged out of engagement with the actuators. The registerframe I55 has a rearwardly extending arm I58 carrying a stud I59 adaptedto cooperate with the upper side of the pointed cam nose of a cam I60pivoted at I6I. When the cam I60 is in the position of Fig. 2, theregister frame I55 is held against movement by its spring I51 and theregister is in engagement with the actuators I53. Connected to cam I60is a link I62 whose rear bifurcated end is slidably mounted on shaftI63. Pivotally connected to the rear end of link I62 is an arm I64(Figs. 2 and 13)whose rear end is Y-shaped to provide an upper branchI65 and a lower branch I66. Each branch has a notch formed in it adaptedto fit over the respective studs I61 and I68 on an oscillatable leverI69 pivoted at I10. The studs I61 and I68 project on both sides of thelever I69 (Fig. 7) and a pass-by pawl I12 having two shoulders on itsupper and lower sides as shown in Figs. 2 and 13 and pivoted on the endof lever I13 fixed to shaft I63 is adapted to cooperate with said studson the side of the lever opposite to that on which arm I66 ispositioned. The operation is as follows:

At the beginning of the cycle the parts are in the position shown inFig. 2. As the shaft I63 is rocked clockwise by a connecting link (notshown) from shaft 33 as shown in the Rinsche Patent 1,234,218 and theGooch Patent 1,395,044, the shoulder on the lower side of the pass-bypawl I12 engages stud I68 and rocks lever I69 clockwise which pulls armI64 and link I62 rearward, moves cam I60, and frees register II toenable it to be moved out of engagement with the actuators by its springI51. This action occurs prior to movement of the actuators. During thefirst half of the cycle, the actuators move to differential positions,and the printing mechanism operates. Near the end of the first half ofthe cycle, the shoulder on the upper side of the pass-by pawl I12 movesin front of stud I61, and, upon return movement of arm I13, the pass-bypawl engages stud I61 and rocks lever I69 counterclockwise to thrustlink I62 forward again. This moves. cam I60 whose nose engages stud I59and rocks the register frame I55 clockwise to re-engage the registerwith the actuators. This movement occurs prior to any return movement ofsaid actuators. During the second half of the cycle, the actuators arerestored to normal by bail I9, and the register pinions are rotated toaccumulate the amount of the item that was indexed in the machine.

The crossfooter or add and subtract register I50 contains two completesets of wheels or pinions, a set of add pinions I15 and a set ofsubtract pinions I16 (Fig. 12). These two sets of acid and subtractpinions are engageable with the racks I52 for calculating operations butare not directly in mesh with each other as is the usual custom.Instead, the add wheels are attached to larger gears I11 while thesubtract pinions are attached to a similar set of gears I18, the largergears being in constant mesh with each other at all times so that whenthe addition wheels are rotated in a clockwise direction for addition,the subtract wheels are rotated counterclockwise. Although both the addand subtract pinions are engageable with the adding racks I52, they areoffset from each other, that is, the add pinions I15 are located to theleft of the subtract pinions I16. Provision is made for sliding theregister wheels laterally under control of an add and subtract device inorder to align either the add pinions or the subtract pinions with theracks I52.

The crossfooter I50 in general is supported on a frame I55C (Figs. 2 and12) pivoted at I56C and is rocked toward and away from the racks at theproper time. The transfer mechanism, later to be described, is alsosupported by the frame I550 and also moves with the,crossfooter frameand pinions as the latter move to and from engagement with the racks. Topermit sliding movement of the crossfooter pinions for add and subtractoperations, the pinions are supported by an independent subframe I19(Fig. 12) which is slidably supported by the frame I550, this slidingframe being moved back and forth by a shaft I having a stud I8I engagedin a cam slot in a plate I82 which is movable forwardly and rearwardlyunder control of the paper carriage and ,also a manually operated shiftlever I63, as will be described later.

The means for moving the pinions of the addsubtract register orcrossfooter I50 into and out of engagement with the racks aresubstantially like those just described for the add register I5I. Themain frame I55C pivoted at I560 is urged clockwise by a spring I51C(Fig. 2) to disengage said register from the actuators. The frame I55Chas a lower rear extension I560 carrying a stud I59C with whichcooperates the nose of a cam I60C pivoted at I6I. Connected to cam I60Cis a link I62C similar to the link I62 heretofore described. Pivoted tolink I62C is an arm I64C (Fig. '1) having a Y-shaped rear end with upperand lower branches I65C and I66C, respectively,

similar to those of arm I64 and cooperating with the studs I61C and I660on lever I69C pivoted at I10C. An arm I13C (Fig. '7) carrying a pass-bypawl I120 cooperates with said studs. The operation of the parts is thesame as that previously described for the register I5I and thecorresponding parts bear the same reference characters with the suffixC.

In crossfooters of this type, the wheels are always disengaged from theracks on the forward machine stroke for both addition and subtractionwhich is performed during the return stroke of the machine cycle, whichmeans that the lateral position of the crossfooter wheels must beshifted for add and subtract operations. This lateral shifting of thewheels is caused to take place during the forward machine stroke whilethe -to shaft I63 is connected by link I66 through a slot and studconnection I640. to a link I65, the forward end of which has a stud andslot connection with a crank I86 pivoted at I61 to the stationary frame.Crank I66 is also connected by stud I66 to the hand shift lever I63. Theforward end of lever I has two arms I69 and I90, the upper arm I69 ofwhich is engageable with a stud I9I on the upper end of a lever I92which 'is pivoted at I81 and connected to the cam slide I62. The lowerarm I of lever IE5 is engageable with a stud I93 on the lower end of thelever I92. The arrangement is such that when the shift lever I83 is incounterclockwise or add position the upper arm I89 is raised so thatorder.

during the forward machine stroke it will engage stud I9I and 'move thecam slide I82 forward to shift the crossfooter to the right into acidposition. If the'shift lever is moved clockwise to the dot and dash lineposition, lever I65 is lowered so that the lower forward arm I98 willengage the stud I93, then when the machine is operated and the lever I85is moved forward, cam slide I82 will be moved rearward and will shiftthe crossfocter into subtract position. A spear point at the forward endof lever I85 passes either above or below the pivot stud I81 during themachine operation to prevent shifting of lever I83 during a machineoperation.

The crank I86 is also under control of the carriage by means of a linkI98, the forward end of which is attached to crank I86 and the rearwardend having a stud and slot connection with link I95 which, in turn, isconnected by crank I96 to link I91, the latter being connected to acarriage control lever I98 actuated by a carriage roll I99 in a wellknown manner.

A spring 288 connected to the rear end of the link I94 returns the crankI86 and lever I85 to the adding position when no carriage subtract rollis engaged with the control lever I98 and the operator does not hold thelever I83 in the subtraction position.

For certain entries it is desirable to restore the crossfooter to addposition by means of the total key 28I. For this purpose, the arm 244which is moved clockwise in'a manner hereinafter described when thecrossfooter total key 28I is depressed carries a stud 283 (Fig. 11) atits forward end which, when arm 244 is moved clockwise, enga-ges the camlever 284 moving it slightly clockwise. This cam carries a stud 285which serves as a connecting means between links I98 and I95. Thus, whenthe crossfooter total key is depressed, cam 284 moves clockwise, causinglink I98 to move rearward, thereby restoring the shift lever I83 fromsubtract to add position against the urge of a subtraction roll on thecarriage. This movement of the lever I83 is permitted because of ayielding connection between I96 and I91.

Tens-transfer mechanism A transfer mechanism is provided in order tocarry or borrow from the wheel of next higher This mechanism isgenerally of the type disclosed in the Sampson Patent No. 2,056,536 butcertain distinctions will be pointed out. Each of the hubs on which thesubtract pinions I16 are attached also supports an add cam 286 (Figs. 12and 12 and a subtract cam 281, the cams being spaced apart a distanceequal to the lateral movement of the pinion frame, and the inclined andradial edges of the add cams facing oppositely to those of the subtractcams. The cams are also so arranged that when the crossfooter is in addposition and the pinions in any order are in zero position the radialedge of the add cam 286 for said order will be immediately in back ofthe transfer pawl 286 for said order as shown in the diagrammatical viewof Fig. 12. The subtract cam 281 at this time will not be aligned withthe transfer pawl, but if the crossfooter is moved laterally to subtractposition, the subtract cam 281 will be aligned with the transfer pawl288 and in its number 9 position relative to pawl 288 as seen in Fig. 12

When an amount is added in the crossfooter, cam 286 is movedcounterclockwise, and when the amount is totaled the cam 286 movesclockthe next higher order.

wise until it limits against pawl 288. As will be apparent, no means isnecessary to lock the transfer pawls 288 during totaling.

The transfer pawl 288 (Fig. 12) is pivoted on shaft 289 and has a lug2l8 engaged with latch 2II, the latter having a downwardly extending arm2I2 engaged with stud 2I3 of rack I52 of A spring I52a (Fig. 9)connected between each rack I52 and its stop bar I4 urges the rackrearwardly relatively to the stop bar but the stud 2 I 3 normally stopsrearward movement of the rack at the 0 position of the latter until atransfer is effected at which time the transfer pawl is rockedclockwise, releasing the latch, whereupon rack I52 is allowed to moverearward an extra unit of movement thereby advancing the wheels in thenext higher order. During subtraction the direction of the wheels isreversed and the subtract cam 281 operates the same carry pawl 288 whichreleases the rack in the same manner and which effects a borrow insteadof a carry in the crossfooter. It will be noted that only thecrossfooter wheels and carry cams move laterally from add to subtractand that the same transfer pawl 288 and associated mechanism is used forboth add and subtract operations and does not move laterally.

The transfer mechanism for the crossfooter is restored each time thecrossfooter is disengaged from the racks and this is accomplished by ayoke 2M in each order which engages a stationary shaft 2I5 and throughspring action resets the latch 2II on the lug 2I8 of the pawl 288.

The transfer mechanism for the lower register is identically the same inprinciple but of course there is only one carry cam on the hub of eachadd pinionof the lower adding register Whereas there is both a carry camand a borrow cam on the hub of each subtract pinion of the crossfooter.

Total taking In total taking operation the registers are allowed toremain in engagement with the actuators during the first half cycle ofmachine operation and the actuators are then differentially positionedunder the control of the registers. The machine is conditioned for thisoperation with the add register I5I by the total key 2I1 (Fig. 2) asfollows:

The total key 2I1 is depressed for total taking and, when depressed, islatched in position by the latch 2 I8. Connected to the stem of said keyis one end of a lever 2I9 pivoted at 228 and having a dependingextension 221 adapted to engage a stud 222 on a lever 223 pivoted at224. Thus, when the total key 2I1 is depressed and lever 2I9' rockedclockwise (Fig. '2) the lever 223 is rocked counterclockwise.

Referring to Figs. 2 and 9, when lever 223 is rocked, its free endengages an arm 225 pivoted on a shaft 226. This arm has a lug 221 (Fig.9) adapted to enga e an arm 228 yieldably connected by spring 229 to thekey restoring slide I2 which is arranged to engage all the zero stopsfor the various orders of the machine. It follows that, when the totalkey is depressed, all the zero stops are moved to free the index barsfor movement.

The engagement and disengagement of the add register I5I is controlledby the total key 2I1 as follows: The rear end of lever 2I9 (Fig. 2) isconnected by a link 238 with the Y-shaped arm I64 and when the total keyis depressed, link 238 raises arm I64 to disengage branch I68 from studI66. This also causes the upper branch I66 to engage the stud I61, saidupper branch camming the lever I63 clockwise. The result is that whenpass-by pawl I12 is moved at the beginning of the total taking cycle itwill'not act on stud I68 and the register I6I will be left in engagementwith the actuators. During the first half of the cycle the actuatorsmove to differential positions under control of the register pinions andnear the end of said half cycle the printing mechanism operates to printthe amount of the total. At the beginning of the second half of thecycle the passby pawl I12 engages stud I61 to rock the lever I69counterclockwise. This pulls link I62 rearward, moves cam I60, andallows the register to move out of engagement withthe actuators. Thisoccurs while the register is clear and before the return movement of theactuators is started. Near the end of the cycle the arm I13, which ismoving counterclockwise, causes a link 23I connected thereto to rock abell crank 232 counterclockwise. This bell crank engages a stud 233 onlink I62 to move the link forward to reengage the register I5I with theactuators after the latter have been returned to their positions.

A total may be taken from the crossfooter or register I50 by depressingthe total key, 20I (Fig. 2). Referring to Fig. 4, the stem of the totalkey is connected by a link to a bell crank 234 pivoted at 236. The lowerarm of this bell crank engages a stud 236 on a slidable link 231connected to a lever 238 fixed to a shaft 239. This shaft extends acrossthe machine and its other end (Fig. 2) carries an arm 238a. Arm 233afixed to shaft 239 is connected by a link 240 to one arm of a threearmlever 24I (Fig. 13) pivoted on shaft I63. The rear arm 242 of thethree-arm lever 2 has a stud and slot connection 243 with the Y-shapedarm I66c so as to permit sliding movement of arm I660. The constructionis such that, when the total key MI is depressed, the link 240 i thrustupward which, through the three-arm lever 24I, lifts the Y-shaped armI660 in the same manner as arm I66 is lifted by link 230 when the totalkey 2I1 for register I5I i depressed.

The downward movement of the arm 244 of the three-armed lever 24I alsoconditions the addition-subtraction controls of the register I50 foraddition as already described.

Depression of the total key 20I also releases the zero stops through themedium of the threearm lever 24I.

As lever MI is rocked clockwise by depression of the crossfooter totalkey 20I (Fig. 2), the forward arm 244 (Fig. 13) moved down and becauseof a slotted engagement therewith depresses lever 225, rocking itclockwise (Fig. 9) to release the zero stops for a total takingoperation.

The third or upper arm 246 (Fig. 13) through a connecting link 241 movesa lever 248 counterclockwise and positions 3, lug 249 of said lever toprevent the pawl I12 from acting on the stud I61. Consequently, theregister I5I is not moved into engagement with the actuator racks at thebeginning of the second half of the cycle but, instead, is non-added.

Sub-totaling A subtotal is taken from register I50 by depressing thesubtotal key 250. Referring to Fig. 4, the subtotal key stem has a lug25l overlying a stud 252 on crank 234 so that depression of the subtotalkey has the same effect as depressing the total key. The subtotal keystem also carries a stud 253 (Fig. 4) overlying an arm 254 fixed to ashaft 266 (Fig. 4). Thi shaft extends across the machine where a crank256 (Fig. 2) is fixed to it. This crank is connected to a link 251connected to one arm of a bell-crank 256 whose other arm has 5. lug 253(Figs, 2, '7 and 13) engaging a lug 260 on a lever 26I. This lever 26Iis shown in Fig. 7, where it will be observed that it has a lug 262adapted to disable the pass-by pawl I to prevent the register beingdisengaged from the racks at the beginning of the second half of thesubtotal taking cycle.

The subtotal key 250 releases the zero stops in the same manner as thetotal key 20I.

Both the total and subtotal keys 20I and 250 when depressed cause amachine cycle. Referring to Fig. 4, the total key stern, which alsomoves down when the subtotal key is depressed, carries a yieldinglymounted pawl 263 adapted to engage a stud 264 on the bar I43 to move thelatter down when either the total or subtotal key is depressed. tothereby cause a machine cycle.

Example of work Before proceeding further with the machine description,the type of work to be performed will be explained by briefly explainingone example in order that the following mechanisms may more easily beunderstood.

A shown in Fig. 14, the amount of the prepayment contract is $140.00.This amount is entered with the paper carriage in its No. 3 position,and printed on the sheet in the position shown in Fig. 14 by depressingthe proper amount keys and the motor bar. After printing in column 3 thecarriage automatically returns to its No. 1 position, the platen in themeantime being line spaced. The operator then enters the amount of themonthly payments, which in this case is $12.00, and gives the machine acycle of operation during which the $12.00 is printed in column 1 asshown in Fig. 14. During the latter part of this cycle the carriagetabulates to its No. 2 position.

The next point to be considered is the number of monthly payments. Theoperator can easily determine this and, after so doing, he sets amechanism in accordance with said number. He then shifts a control leverand depresses the motor bar, after which the machine goes through apredetermined number of cycles of operation and automatically stops.During these automatic operations the amount of each monthly payment isprinted, the balance due after each payment is printed, and theseentries are properly line spaced and column spaced as shown in Fig. 14.

It now remains to explain how these results are obtained mechanically.

Predetermined cycles of machine operation lever 265 (Figs. 2'and 10) anddepressing the motor bar I42 (Fig. 4). The lever 265 is an extension orarm of a member 266 pivoted on a shaft 261 am. provided with fouradditional cam arms 268, 269, 210 and 21I. Each of these arms controlcertain mechanisms to be presently described. The full line position ofthe lever 266 and the four arms shown inFig. 10 is the inactive positionof the parts. When the operator to which desires to condition themachine for automatic cycles he moves lever 265 to the'dot-dash positionof Fig. 10 which, of course, moves the four arms a correspondingdistance counterclockwise.

Taking first the arm 268 which is utilized to cause the motor bar to belatched down for a plurality of cycles of operation, it will be observedthat when the parts are in the Fig. 10 position the end of this armengages a stud 212 on an arm 213 ofa yoke 214 pivoted at 215. This yokeis urged counterclockwise, as viewed in Fig. 10,- by the spring 216, oneend of which is secured to the arm 213, until stud 212 engages arm 268.The other arm 211 of the yoke projects rearwardly (Fig. 2) where it isconnected to a bail 218 extending the length of the paper carriage.Referring to Fig. 6, the bail 218 engages a roller stud 219 on the endof a slide 280 slidingly supported by a stud 28I on a stationary bracket282 and urged upward by a spring 283. The slide 280 extends to the left(Fig. 6) and thendownwardly where it is connected to an extension 284 ofa lever 285 pivoted at 38. This lever has another arm 286 provided witha lateral lug 201 (Fig. 4) positioned pnder a stud 289 (Figs. 4 and 6)on one arm of a bell crank 290 (Fig. 4) pivoted at 29 I. The other armof said bell crank is connected to a link 292 which extends forwardly towhere it is connected to one arm of another bell crank 293 having ahooked end 294 adapted to pass over the stud 264 on the bar I43 that ismoved downward when the motor bar I42 is depressed. The bell crank 293is urged counterclockwise (Fig. 4) by a spring 295.

When the parts are in the position of Fig. 10,

the arm 213, yoke 214, and arm 211 are heldagainst counterclockwisemovement and the slide 280 (Fig. 6) is held upward by spring 283. Thisholds the lever 285 in the position of Fig. 6, which holds lug 281 understud 289 and prevents bell crank 293 (Fig. 4) from being flickedcounterclockwise by its spring 295. But when the control lever 265 ismoved to the dot-dash position of Fig. 10, the arm 268 moves out of thepath of stud 212 and theyoke 214 with its arm 211 is rockedcounterclockwise by spring 216. This moves the ball 218 (Fig. 6) to itsdot-dash position and moves slide 280 downward, the spring 216 (Fig. 10)overcoming the spring 283 (Fig. 6). This, in turn, rocks lever 285counterclockwise and lowers lug 281 thereby releasing stud 288 so thatspring 295 (Fig. 4) may rock bell crank 293 counterclockwise when it isfree of stud 264. It follows that, if the motor bar is depressed aftercontrol lever 265 is moved'to the dot-dash position of Fig. 10. thehooked end 294 of bell crank .293 ..Will pass over stud 264 (Fig. afterthe motor bar is depressed. and hold said bar depressed until somemechanism acts to release it. This release, after a predetermined numberof cycles, is controlled by the fourth arm 21I as follows:

Journaled loosely on shaft I81 (Fig. is a bell crank 304, 306, the arm304 of which has a stud 305 on its end adapted to be engaged by the endof the fourth arm 2' when the latter is in the position shown in Fig.10. The other arm (see of this bell crank has a stud 301 on its end oneend of spring 216 is connected, the spring serving to urge the bellcrank, as well as the arm 213, counterclockwise: that is. it tends tourge the arm and crank together. When the control lever 265 is moved tothe dot-dash position of Fig. 10, the end of arm 21! moves out of thepath of stud 305 and at the same time arm 268 moves out of the path ofstud 212 allowing the spring 216 to urge arms 213 and 306 toward eachother. However, crank 304-306 can move only slightly in acounterclockwise direction because a stud 306 on arm 304 engages theDeriphery of a disk 309. The arm 213, however, moves counterclockwiseunder urge of spring 216 until it limits against stud 301 carried by arm306 thereby lowering bail 218 and slide 280 (Fig. 6) against the tensionof spring 283.

The disk 309 is journaled loosely on the shaft 261, said disk beingconnected to a hub 3I0 shown in Fig. 8.

Provision is made for advancing this disk a predetermined distanceduring each machine cycle under control of the second and third arms 269and 210 as will presently be explained. The disk has a notch 3II in it,which when it comes opposite stud 308 on arm 304 allows said arm to movecounterclockwise under the urge of spring 283, the spring 216 stillholding the stud. 301 against the edge of arm 213 and causing the bellcrank 304, 306 to move counterclockwise as the yoke 214 is movedclockwise by the slide 280 as the latter is moved upwardly by spring283. This rocks lever 285 clockwise and the lug 281 engages stud 289 torock bell crank 290 (Fig. 4), link 292, and bell crank 293, the spring283 for slide 280 being strong enough to overcome the spring 295 (Fig.10) for bell crank 293. The result is that the hooked end 294 of bellcrank 293 is moved from over stud 264 and the motor bar is released forreturn to normal, said bar being urged to normal undepressed position byspring I41 (Fig. 4).

It thus becomes apparent that when the control lever 265 (Fig. 10) ismoved to its dot-dash position it conditions mechanism such that, afterthe motor bar is depressed, the machine continues to cycle until thedisk 309 has been moved far enough to cause the notch 3H to comeopposite stud 308 on arm 304." The disk is moved by mechanism asfollows: 1

.Referring to Fig. 4, it will be recalled that the shaft I01 isoscillated by the parts 33, I00-I06 at the end of each line of entries.

The platen spacing lever II0 (Fig. 10) fixed to shaft I01 carries a stud3I4 positioned in the forked end of a lever 315 fixed to the inside endof a stud 3I6 which passes through a stationary plate 3I1 on the papercarriage. Fixed to the other end of stud 3I6 is a lever 3I8 whichcarries a pawl 3I9 urged clockwise (Fig. 10) by a spring 320 to engagethe teeth 32I' of a gear 322 journaled loosely on shaft 261. The gear322 is connected to the disk 309 by means of a toothed lug 323 (Fig. 8)on the disk which engages the teeth 32I of gear 322.

When the control lever 265 (Fig. 10) is in its full line position, thesecond arm 269 holds pawl 3I9 in inactive position but, when said lever265 is moved to its dot-dash position, the pawl 3I9 is released toengage the teeth of gear 322. Then, as the shaft I01 is rockedcounterclockwise during the machine cycle with the carriage in itscolumn No. 3 position, the gear 322 is advanced by said pawl 3I9 and thedisk 309 is like to its dot-dash position (Fig. 10) the detent isreleased for movement to active position.

It will thus be seen that the disk 305' is automatically advanced eachtime the line space mechanism is advanced while the control lever 265 isin the position shown in dot-dash lines in Fig. 10. The distance ofmovement of the disk is independent of the extent to which the platen isline spaced because the end of the second arm 269 acts as a shield tocause the pawl 3I 9 to engage only one tooth of gear 322 regard- 7 lessof the extent of movement of the line spacing lever l|0. It now remainsto describe how the number of machine cycles is predetermined.

Referring to Fig. 8, the disk 309 is urged toward the gear 322 by aspring 335 surrounding shaft 251 and engaging the inner end or hub 3l0.Spring 33 is held in position on the shaft by screw 336. Fitting overthe hub 310 of disk 309 is an indicator dial 331 which is held againstrotation on the hub by the key 338 and which is held on said hub by aknob 339 screw threaded on to the hub 3). It will be-evident that, whenthe parts are assembled, the operator can pull outward on knob 330 topull disk 309 away from gear 322 after which the disk'309 can be turnedindependently of gear 322 to locate its notch 31! at any positionrelative to the position of the gear. A pointer 340 (Fig. is provided onan extension of the stationary plate 3!! and the figures on theindicator 33'! are arranged so that by setting them relative to thepointer the 1 number of machine cycles or preferably the number ofpayments may be predetermined.

The gear 322 has a home position toward which it is urged by a coilspring 34! (Fig. 8) attached at one end to the gear and having its otherend hooked into a notch 342 in a sleeve fixed to shaft 261. A lug 343(Fig. 8) on the gear 322 strikes stop 344 (Fig. 10) when the gear is inhome position. The stop 344 is in the form of a bell crank pivoted on astud 345 on the stationary plate 311 and urged to blocking position by aspring 346.

It will be understood that, when the control lever 265 is in its fullline position of Fig. 10, the pawl 319 is held in inactive position, thedetent 325 is held inactive, and the stud 308 on arm 304 is held awayfrom disk 309. The gear 322 will, at this time, be held in its homeposition by the spring 34L The operator may then set the indicator 337(Fig. 8) at a desired position to obtain the number of machine cycles hewishes. The indicator may be, and preferably is, marked to indicate thenumber of periodic payments rather I than machine cycles, since thereare three machine cycles in the machine disclosed for recording eachpayment.

After setting the indicator, the operator moves the control lever 265 tothe dot-dash position of Fig. 10. This moves four arms 268, 269, 210 and2H and conditions the mechanism for causing continuous machine cycles byrocking yoke 214 to move the devices that hold the motor bar down,releases arm 304 to enable stud 300 to engage the periphery of thecontrol disk 303, and enables the pawl 3H! and the detent 325. Themachine then continues to cycle until the notch 3 comes opposite stud308, whereupon the machine is automatically stopped. The operatorsubsequently moves the control lever 265 back to its full line positionof Fig. 10, as will be presently explained, which holds the cyclingmechanism against operation, disables the arm 304 with its stud 308, anddisables the pawl 3l3 and detent 325. This frees the gear 322 whichreturns to its home position under the urge of its spring SM, and,through its engagement with the toothed lug 323, also returns the disk309 and the indicator 331 to the set position which it occupied at thestart of the last series of operations so that a new series 01'operations involving the same number of payments can be perlormedwithout manually resetting the indicator 337, or the indicator may beset manually for a series of any required number or payments.

The operator can stop the machine at any time while it is cycling bymoving the control lever 255 back to its lull line position (Fig. 10)which normalizes the parts.

From the description thus far given it will be clear that the machinecan be caused to go through a predetermined number of cycles ofoperation; that the carriage will tabulate lrom No. 1, to No. 2, to No.3 columns and then be returned to No. 1 position, the platen being linespaced at the end OI the machine operation in column No. 3.

It remains to describe how the various figures are printed in thedifferent columns.

Automatic controls As previously stated the amount of the contract,$140.00, is entered on the amount keys by the operator as the firstoperation with the carriage in its No. 3 columnar position and themachine is given a cycle of operation to print this amount in column 3as indicated in Fig. 14. This amount is added into the add-subtractregister I50, said register being normally in condition for additionwith the carriage in column 3. The add register 15! is non-added in thisNo. 3 column. For this purpose, the carriage is provided with a controlroll 354 (Fig. 7) which engages the end of a lever 355. This lever isconnected by a link 356 to one end of another lever 351 having a stud358 engaging a projection on the lever 248 and moves the latter, withthe result that pawl H2 is disabled from acting on stud l6! and register|5l remains out of engagement with the actuators during the entiremachine cycle in this columnar position and for this operation.

After the carriage returns to its No. 1 column, the platen having beenline spaced, the amount of the periodic payments, $12.00, is entered onthe amount keys and the machine given a cycle of operation during whichthe item is printed as shown in Fig. 14. During this cycle of operationin this column the add-subtract register is in subtract condition. Thisis brought about by a roll I99 (Fig. 11) on the carriage which engagesthe lever I38 which in turn controls the subtraction lever 183 aspreviously described. The amount ($12.00) that was indexed on the amountkeys is subtracted from the add-subtract register leaving it with$128.00 in it, and is added into the add register l5l which is normallyin add condition leavingit with $12.00 in it. At the end of the cyclethecarriage tabulates into column 2.

With the carriage in its No. 2 columnar position the indicator 331 (Fig.8) is set, the control lever 265 (Fig. 10) is moved to active position,and the motor bar is depressed to initiate a series of machine cycles.No amount keys are depressed in this column or in any subsequent columnsduring the automatic series of operations. The add register is non-addedin this column by a suitable carriage roll such as 354. Late in thecycle of operation initiated with the carriage in column No. 2, thecarriage is moved to column dicated in Fig.

No. 3 after which the machine performs another cycle of operation.

In column No.3 it is now desired to print the balance due, 1. e.,$128.00, which is the amount in the add-subtract register. However, itis not desired that the add-subtract register be cleared. This requiresa subtotal operation. But, as previously explained, the add-subtractregister is normally in addcondition in column No. 3. The propercontrolis brought about as iollows:

Referring to Fig. 6, a link 359 is mounted on stud 360, the upper end ofsaid link being connected to one end of a carriage control lever 36Ipivoted at I29, said lever being adapted to be engaged bya roll, such asthe roll 36Ia, when the carriage is in its No. 3 column. Mounted on thelower end of link 359 is a short slide 362 yieldingly connected to link359 by spring 363. The short slide 362 has lateral lug 364 over which,under certain conditions, is positioned a lug 365 on the end of a slide366 connected to the upper end of lever 265. Whenthe control lever 265is in the full line position of Fig. 10, the lever 265 is in theposition of Fig. 6,,and slide 366 blocks the slide 362 against movement.However, when control lever 265 is moved to active position, the'lever265 is rocked counterclockwise, I

and slide 366 is moved to release the slide 362. Fromthis it will beseen that, even though a carriage control roll. engages carriage controllever 36I- in the No. 3, or any other column, the slide 362 will not bemoved unless the control lever 265 is moved to active position.

Slide 362 is connected (Fig. 1) to one end of a lever 361'which has astud and slot connection with a lever 368 pivoted at Ic and carrying astud 369. When slide positioned so pawl I120 so'that, at the beginningof the cycle, it does not act on the stud I660 and the addsubtractregister is not disengaged from the actuators.

In order. to take a subtotal it is, of course, necessary to release thezero actuators to move to differential positions under 362 is raised,stud 369 isas to interfere with the pass-by and the add-subtractregister or crossfooter I50 before. viously in the No. 1 column, theamount of $12.00 was indexed on the keys, and the add register was inadd condition. With the carriage in the No. 1 column a second time, nokeys are indexed. The add register I5I contains $12.00

contains $128.00. It is desired to print$12l00 and subtract it from theadd-subtract register I50.- This is done by.

add register I5I and taking a subtotal from the subtracting it from theadd-subtract register I50. Referring to Fig. 6, a carriage. controllever 316 is pivoted at I29 and a carriage roll is positioned to engagethe lever when the'carriage is in its No. 1 columnar position. Thislever is connected to a link 311 that has a short slide 318 connected toits lower end, the slide being urged upward on the link by a spring 319.As shown in Fig. '1, the slide 318 is connected to a lever 360 pivotedat 38I. This lever is, in turn, connected to a bell crank 382 pivoted atI10. The lower arm of the bell crank carries a stud 363adapted tointerfere with the action tion, the s1ide318 is ycolumn at'the timestops to permit the I control of the register pinions. For this purpose,a lever 31I (Fig. 2) is provided and pivoted at 312. The rear end ofthis lever has a lateral lug 313 overlying the lever 361. is raised bythe carriage roll, as heretofore de scribed, the lever 31I is rockedclockwise The forward end of the lever 31I overlies a stud 314 on aslide 315 whose lower end engages over the arm 225 (Fig. 9). When arm225 is rocked clockwise, the slide I2 is moved to release the zerostops.

Thus, with; a control roll 3, after the control lever in activeposition, the add-subtract register I56 will be conditioned for asubtotal. Both the conditioning of the machine and the taking of thesubtotal take place automatically. The amount of the subtotal ($128.00)will be printedas in- 10. The add register I5I is nonadded by the roll354 in this column, as it was when the amount of $140.00 was entered.

The platen is line spaced during the latter part of the cycle in columnNo. 3 andthe carriage returns to the No. 1' column where the machine isgiven another cycle of operation. In this column it is'desired that theamount of the periodic that this amount subtract register.

active in column No.

The add-subtract register I56 is conditioned for subtraction bv the rollI99 payment, $12.00, be printed again and be subtracted from theaddcontrolled lever 316 carriage, and the link 311 with its slide 318pulled tion because the slide of the pass-by pawl I12. that when thecarriage is rocked by a roll on the The arrangement is such upward, thelever 380 and bell crank 382 are rocked to a position such that thepass-by pawl I12 is disabled and the add register I5I is left inengagement with the actuators during the entire cycle so that asub-total is taken from it.

The lever 360 also underliesthe lever 31I shown in Fig. 2 so that thezero stops are released as previously explained.

Except when the :lever 265 is in its'active posi blocked againstmovement by the lug 365 on slide 366 (Fig. 6) in the same manner as theslide 362 previously explained.

Thus, when the carriage is first in the No.- 1 I the item of $12.00 isindexed on the keys, the add register I5I is in add condi- 318 isblocked against being moved by a carriage roll which, therefore, merelytensions the spring 319. However, when the control lever 265 (Fig. 10)is moved to active position (first operation in column No. 2), the slide366 isslide 315 (Fig: 2), so that moved to release the the second timethe carriage reaches its No. 1

column a subtotal is taken from the add register I I5I. This subtotal isprinted, and it is subtracted from the add-subtract register, the latterhaving 265 has been placed been placed in subtraction position aspreviously explained. The conditioning of the machine for subtotaltaking and the taking of the subtotal are both automatic. z

Near the end of the operation in the No. 1

column the carriage again moves to column No. 2. -The add register isnon-added, in this Column as previously explained. During'the machinecycle in column' No. 2 the add-subtract register I56 is changed fromsubtract back to add condition. In column No. 3, the add register I5l isnonadded and the add-subtractregister I50 is subtotaled as previouslyexplained, after which the carriage returns to its No. 1 position, theplaten being line spaced in the meantime.

These operations are repeated a number of times depending upon how theindicator 331 is .volves eleven set. In the example. shown, the contractof $140.00 with payments of$12.00 per month, in-

payments, with a remainder of $8.00. The control lever 265-is not movedto active position until after the cycle of operation as in which thefirst payment of $12.00 is entered --I-Iowever, when the carriage waspre-

